A gasoline dispensing system having vapor removal means associated therewith incorporating a pressure-actuated switch for detecting increased gas pressure in said vapor removal means when a liquid blockage occurs therein. When the gas pressure exceeds a predetermined amount, said pressure switch energizes an electrical circuit comprising an alarm.

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3 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B67D7/54
B67D7/04

USPC · US Patent Classification

141/95

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